html html5 difference

HTML and HTML5 are two document type definitions (DTDs) that are used to represent the structure and content of web pages. HTML is the abbreviation of HyperText Markup Language, and HTML5 is the fifth version of HTML. HTML5 is an upgraded version of HTML, providing more functions and new features. In this article, we will detail the differences between HTML and HTML5.

1. Document Type

HTML5 has different document type definitions (DTDs) than HTML. HTML uses the DTD definition of HTML 4.01, while HTML5 uses the (loose DTD) definition.

2. Markup language

HTML5 is more relaxed than HTML. It allows you to use unclosed tags in your document. It also allows you to omit quotes in attribute values. HTML does not allow such markup language, so you must declare the closing tag correctly and use quotes.

3. New tags

HTML5 introduces many new tags, such as: header, footer, nav, section, article, aside. These tags help web designers better organize and present web content.

4. Multimedia support

HTML5 provides native support for multimedia. It supports video and audio tags, allowing you to play video and audio files in web pages. This is simpler and more stable than using plug-ins such as Flash to play video and audio.

5. Application Cache

HTML5 allows you to save web pages to your browser’s cache for later use offline. This feature is very useful for offline apps as it allows you to use the app as usual even if you are not connected to the internet.

6. geolocation

HTML5 supports the geolocation API, which can obtain the user's geographical location information through the browser. This is useful for apps and websites as it can provide more precise information based on the user's location.

7. Web Workers

HTML5 introduced the web worker API, which allows JavaScript to run in the background without disturbing the main thread. This feature is very useful in applications that need to process large amounts of data or run for a long time, as it prevents the application from freezing or crashing.

In short, HTML5 is an improved version of HTML that provides developers with more functions and new features. It provides better multimedia support, better application caching, better geolocation support, better Web Worker support. It is also more loose and flexible, which makes it easier for developers to write and manage web page code.

The above is the detailed content of html html5 difference. For more information, please follow other related articles on the PHP Chinese website!